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Finding the Fourth Proportional to 261,136.85, 358,021.97 and 256,412.93

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Solution

The fourth proportional to 261,136.85, 358,021.97 and 256,412.93 is: 351,545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,136.85 : 358,021.97 = 256,412.93 : x
  2. Step 2: Convert to fraction form
    261,136.85/358,021.97 = 256,412.93/x
  3. Step 3: Cross multiply
    261,136.85x = 358,021.97 × 256,412.93
  4. Step 4: Simplify right side
    261,136.85x = 91,801,462,332.07
  5. Step 5: Solve for x
    x = 91,801,462,332.07/261,136.85
  6. Step 6: Final answer
    x = 351,545.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.